Implement TryFrom<&'a str> for Method, deferring to the existing implementation of FromStr.

Author: Luca Palmieri

src/method.rs

@@ -84,3 +84,11 @@ impl FromStr for Method {
         }
     }
 }
+
+impl<'a> std::convert::TryFrom<&'a str> for Method {
+    type Error = crate::Error;
+
+    fn try_from(value: &'a str) -> Result<Self, Self::Error> {
+        Self::from_str(value)
+    }
+}